68917646 has 16 divisors (see below), whose sum is σ = 118278144. Its totient is φ = 29502744.

The previous prime is 68917633. The next prime is 68917657. The reversal of 68917646 is 64671986.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68917646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13211 + ... + 17673.

It is an arithmetic number, because the mean of its divisors is an integer number (7392384).

Almost surely, 2^68917646 is an apocalyptic number.

68917646 is a deficient number, since it is larger than the sum of its proper divisors (49360498).

68917646 is a wasteful number, since it uses less digits than its factorization.

68917646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5575.

The product of its digits is 435456, while the sum is 47.

The square root of 68917646 is about 8301.6652546342. The cubic root of 68917646 is about 409.9933490890.

The spelling of 68917646 in words is "sixty-eight million, nine hundred seventeen thousand, six hundred forty-six".